Feeding chain for woodworking and other machines



FOSTER AND F. H. CLEMENT.

|.. s., M. G., AND B. H. CLEMENT, EXECUTOHS OF P. H. CLEMENT, msc'n.FEEDING-CHAIN FOR WOODWORKING AND OTHER MACHINES.

Patented July 25, 1922.

APPLICATION FILED. MAYZ], 1919- WIT IVESSES:

aieaierzimter e ATTORNEY UNE'E'ED STATES PATENT @FFlCE.

CHESTER B. EosTER AND FRANK H. CLEMENT, OF ROCHESTER, NEW YORK; LOUISAs. CLEMENT, MARY e, CLEME T, AND BENJ'. n. CLEMENT, EXECUToRs OE SAIDFRANK II, CLE ENT, DEC ASED; SAID ExECUToRs ASSIGNORS on THE ENTIRERIGHT OF SAID ERANK I-I. CLEMENT. DECEASED, To AMERICAN WOODWORKING MCHINERY COMPA OF ROCHESTER, NEW YORK, A C R- ORATION OF PENN- SYLVANIA;SAID EosTER AssIeNoR E HIS ENTIRE RIGHT To AMERICAN woon- WORKINMACHINERY COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION 013 NEW/V YORK.

EEEEINe'eIIAIN EOR wOOnwoRKINcr AND QTI-IER- MACHINES.

Application filed May 27,

in Feeding Chains for WVoodworking and Other Machines, of which thefollowing is a specification.

Our invention relates to that type of feeding chains which isrequired'for fast andaccurate work, and carries positive feeding dogs orlugs at intervals along the working face, and it has for its object toprovide a simple, strong and durable feeding dog of this nature that maybe accurately and positively adjusted both with reference to advancingor retarding the point of feeding contact and the extent of theengagement had with the work-piece. Asapplied to a feed chain forwoodworking machinery, the

invention contemplates the use of a longitudinally adjustable blockfitted to the main links to which block is attached a disappearingfeeding dog. r

To these and other ends the invention resides in certain improvementsand combinations of parts all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification.

In the accompanying drawings, Fig. l is a plan view of a fragment of afeeding chain constructed in accordance with and illu trating oneembodiment of our invention: Fig. 2 is a sectional side elevation: Fig.3 is a cross section of a main link and track: Fig. 4 is an elevation ofthe adjusting eccentric and Fig. 5 is a cross section and Fig. 6 an endview of the same.

Heretofore positive feeding chains have been made with main links andconnecting links, said main links carrying feeding dogs secured rigidlythereto: for common work not requiring accuracy this constructionanswers, but where it is required to adjust the dogs longitudinally orto have certain dogs disappear below the working face of the chain forthe feeding of the wide stock,

Specification of Letters Patent.

Patented J uiy 25, 1922.

1919. Serial No. 300,14

what we accomplish in the within described construction. I I

The main links A, Figs. 1 and 2, are preferably made'of malleable orsteel castings and are boX shaped. as indicated in Fig. 8, consisting ofthe twosides l0 and tie bars 2 and 6; this latter bar should be apart ofthe casting thus attaching the sides 10 together, making the link aunit. Tie bar 2 1s necessarily a separate piece as hereinafter describedand it would be possible to make up the links by securely attaching tieban 6 to the sides 10 by screws or other equivalent means.- The links A'are carefully machined inside and out, and a sliding block C is fittedto move freely but closely inside the box thus formed. Tie bar 2 is aseparate. piece secured rigidly to the sides 10, but removable therefromand it contacts with the block 0 and holds it in position against anythrust caused by the feeding of the stock to the cutter or tool used inthe machine. Tie bar 2 canthus be removed to permit the assembling jorunassembling of the link, the sliding block and the adjusting eccentricdescribedbelow. The outside machining of the links A is for the purposeof guidingthem'in a track E, Fig. 3, to which the links are carefullyfitted and thus accuracy of operation of the chain in a straight line isensured. B are the connecting links which may be of steel castings or ofbar steel cut to length and properly machined to fit between the sides10 of the main links and be jointed thereto by pins 3.

To the end of the block C we attach a positive feeding dog D, which whenworking projects above the working face of the chain, as shown in Fig.2. This dog may be attached to the block in any suitable manner, but forsimplicity and directness we prefer to use a clamping screw 11, Figs. 1,2, 3, threaded into the block and passing through a slot 12, Fig. 3, inthe dog; this clamp screw is manipulated by a wrench fitted to itshexagon head, andclearances 8, Figs. 1 and 3, are formed in the sides 10of the links, permitting the swing of the wrench. Thus the dog D may bereadily loosened and adjusted vertically or dropped below the workingface of the chain as shown in dotted lines in Fig. 2 when wide or longstock covering more than one or more of the links is required to be runthrough the machine.

To fulfill the other function required of the block C, viz: longitudinaladjustability, we provide an eccentric 4, Figs. 2 and l, the ends 1 ofwhich are fitted into bearings bored through the sides 10 of the mainlinks and the central or eccentric portion accurately fitted into a slot5 in the sliding block C. Means for revolving the eccentric are providedsuch as a screw driver slot in each end as seen in Fig. 6, or the endsmay be fitted to a socket wrench. It will be noted that in order toassemble or dissemble the block C and eccentric 4 from the main links itis necessary to remove the tie bar 2, but tie bar 6 is preferably a unitwith the main link, principally for construction purposes;

It is evident from the preceding description that the feeding dog D iscapable of vertical adjustment for thick and thin stock, and fordisappearance out of action for wide stock and furthermore where two ormore feeding chains are used together for long stock as is frequentlyrequired, one or both dogs and blocks can be adjusted longitudinallywhereby the cutting can be done absolutely square with the driven edgeof the stock. lVe do not intend to confine ourselves to the exact meansshown for adjusting the block C or the feeding dog D because otherequivalent devices might be adapted to pro-- cluce similar results;neither do we intend to be confined to the location of the sliding blockand dog internally to the main links, as it might be feasible to attachthese parts or equivalent parts to suchlinks upon their working face orotherwise, and produce similar or identical results; but

What we claim as our'invention and desire to secure by Letters Patentis- 1. The combination in a feeding chain of a main link, a block fittedto slide longitudinally in said link, a feeding dog made verticallyadjustable on the sliding block and means for positively adjusting thesliding block longitudinally in the main link.

2. In a feeding chain the combination with a main link and a slidingblock mounted therein, of a feeding dog positively attached to theblock, constructed to be vertically adjustable thereon and to drop belowthe line of the working face of the chain and means for adjusting saidsliding block longitudinally in the link.

3. In a feeding chain the combination with a main link and a slidingblock mounted between its sides, of tie bars, one of which is removable,secured between the sides of the link for guiding said block.

at. In a feeding chain the combination with a main link, of a slidingblock fitted therein, means for adjusting said block lon gitudinally ofthe link, and an adjustable feeding dog clamped to the block providedwith a slot therein to receive a clamping screw to permit thedisappearance of the dog below the working face of the chain link.

5.1n a feeding chain the combination with a main link, of a slidingblock mounted therein, an eccentric having bearings in the link andarranged to adjust said block longitudinally, a feeding dog clamped tothe block and provided with a slot therein to receive a clamp screwwhereby the dog may be vertically adjustable and the sliding block anddog receive a definite longitudinal adjustment.

6. The combination with a feed chain link, of a slidable block fittedbetween the sides of said link, guides for limiting the movement of theblock in asubstantially longitudinal direct-ion, and an actuating meansoperable from outside the link for positively adjusting said blocklongitudinally.

CHESTER B. FOSTER. FRANK H. CLEMENT.

Witnesses LOUIS G. CONNER, C. S. RICHMAN.

